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Department of Neuropharmacology, Scripps Research Institute, La Jolla, California 92037.
Asian-American men who possess ALDH2*2 alleles and who experience a facial flush after consuming alcohol were carefully matched on drinking history and demographic variables with nonflushing Asian males with only ALDH2*1 alleles. Each man was tested following placebo and a challenge dose of 0.75 ml/kg alcohol. Following alcohol, flushers reported experiencing significantly more positive feelings of intoxication than nonflushers, despite equivalent blood alcohol concentrations. These data suggest that Asians who flush after drinking, particularly those with ALDH2*1/2*2 genotype, have a more intense, although not necessarily a more negative, response to alcohol than comparable nonflushing Asians. This alcohol sensitivity reaction that many Asian flushers experience may contribute to their lower tendency to drink excessively, even though their response to alcohol is not predominantly negative.
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